How to tell if Seprae Tetra is Male or Female - Tropical Fish Keeping - Aquarium fish care and resources
 
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post #1 of 5 Old 08-19-2011, 12:49 PM Thread Starter
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Question How to tell if Seprae Tetra is Male or Female

Hey everyone. Yesterday I bought four new fish for my tank which are Serpae Tetra fish! Here's my question. Are male serpae tetra fish larger than females? Only wondering as one of my four is signifficantly larger by about .2" than the others. I'm asking as I'm concerned if the larger ones are female, then I'm worried she will be pestered to mate and possibly die of stress. Although I haven't seen any of them being physically "interested" in another. Thanks for any help!

Last edited by Reece; 08-19-2011 at 12:52 PM. Reason: Spelling mistakes
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post #2 of 5 Old 08-19-2011, 07:00 PM
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This older thread may help you Reece....Sexing serpae tetras

...and males usually are brighter in redness colour, females are always rounder/larger.
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post #3 of 5 Old 08-19-2011, 08:26 PM
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Quote:
Originally Posted by Reece View Post
I'm worried she will be pestered to mate and possibly die of stress. Although I haven't seen any of them being physically "interested" in another.
Edit: Addition to my previous post: I wouldn't worry to much about the pestering, unlike livebearers where the male is constantly trying to inseminate the female, with egg scatterers, the female is more in control and it goes in a cycle, when she is ready to release & scatter the eggs, the male/s will follow and fertilise the eggs. There may be some courtship display, coaxing the female into being interested, males will display dominance to other males, but the female doesn't experience harassment/stress like female livebearers go through ime/imo.
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post #4 of 5 Old 08-21-2011, 06:11 PM Thread Starter
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Yes I did notice a small display of two trying to show their dominance in front of the female. It did result in a small stand off that ended up with a fin nip but not major and it isn't visible and still swims perfectly and is still very healthy. The funny thing was the female seems to stay with the other male that wasn't involved in the small fight haha

"Don't leave something good, to find something better, once you know you had the best, the best has found better" -Drake

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post #5 of 5 Old 08-22-2011, 12:42 PM
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Serpae need a larger group to ease the stress this is causing, as has already been witnessed. No less than 8-12 Serpae Tetra makes their lives livable.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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